
function fc(num1:number,num2:number):number{
    return num1+num2
}
const num = fc(1,1)
console.log(num)

function err() : never{
    throw new Error()
    console.log("永远不会走到这来")
}

function fc2({a,b}:{a:number,b:number}) : number{
    return a+b
}
const re2 =  fc2({a:1,b:3})
console.log(re2)
export{}
